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Repairing mass based on used magnesia carbon refractory and preparation method of repairing mass

A technology for post-magnesium carbon refractory material and charging charge, applied in the field of refractory charging charge, can solve the problems of low added value, waste of resources, pollute the environment, etc., and achieve high added value, saving resources and energy, and saving mineral resources and energy. Effect

Inactive Publication Date: 2013-12-18
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of these used refractory materials are discarded as garbage or used for primary utilization, and the added value is very low, which wastes resources and pollutes the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A repairing charge based on a used magnesium-carbon refractory material and a preparation method thereof. Stir and mix 50~60wt% of used magnesia-carbon brick pellets, 10~20wt% of fused magnesia fine powder, 8~15wt% of paraffin, 10~15wt% of medium temperature asphalt and 3~5% of additives , to make repair charge based on used magnesia-carbon refractories.

[0026] In this embodiment: the additive is metal aluminum.

Embodiment 2

[0028] A repairing charge based on a used magnesium-carbon refractory material and a preparation method thereof. Stir and mix 60~70wt% of used magnesia-carbon brick pellets, 20~30wt% of sintered magnesia fine powder, 1~7wt% of paraffin, 5~10wt% of medium-temperature asphalt and 1~2% of additives, The repair charge based on the used magnesia-carbon refractory material is prepared.

[0029] In this embodiment: the additive is simple silicon.

Embodiment 3

[0031] A repairing charge based on a used magnesium-carbon refractory material and a preparation method thereof. First, 50~60wt% of used magnesia carbon brick pellets, 5~10wt% of fused magnesia fine powder, 5~10wt% of sintered magnesia fine powder, 8~15wt% of paraffin, 10~15wt% of medium temperature Asphalt and 3-5% additives are stirred and mixed to prepare a repair charge based on the used magnesium-carbon refractory.

[0032] In this embodiment: the additive is an aluminum-silicon alloy.

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PUM

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Abstract

The invention relates to a repairing mass based on a used magnesia carbon refractory and a preparation method of the repairing mass. According to the technical scheme, the preparation method comprises the following step of: agitating and mixing 50 to 70wt% of used magnesia carbon brick particle, 10 to 30wt% of fine magnesia powder, 1 to 15wt% of paraffin, 5 to 15wt% of mid-temperature pitch and 1 to 5wt% of additive, to prepare the repairing mass based on the used magnesia carbon refractory. The preparation method has the characteristics that the resource and energy are saved, and the environmental pollution is reduced; the prepared repairing mass is high in flowing performance, fire resistance and sintering performance, and has better repairing effect as well as high additional value. The repairing mass prepared by the preparation method not only can be used as a material for quickly repairing inner liners of a metallurgical furnace and a container, but also can be used as the material for repairing other metal melt metallurgical furnaces.

Description

technical field [0001] The invention belongs to the technical field of refractory repair charge. In particular, it relates to a repair charge based on a used magnesia-carbon refractory material and a preparation method thereof. Background technique [0002] In order to meet the needs of high-speed smelting of metallurgical vessels and equipment such as converters, it is urgent to carry out research and development of hot and rapid furnace repair materials. For the refining vessel outside the furnace with the ladle as the core, the molten steel impact area often needs online maintenance to prolong the service life of the ladle; there is often a large gap between the nozzle and the refractory material at the bottom of the ladle after replacement, and the tank needs to be shut down Repair, thus affecting the turnover rhythm of the steel drum. Refractory materials for repair and maintenance used on site usually need to be added with water or other liquid binders. The construc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 魏耀武许兴堂
Owner WUHAN UNIV OF SCI & TECH